8th Grade Life Science

Cell Structures and Functions

1. Go over p.28. Overview and Reinforcement of Cells to review the structures and functions of cells

2. Participate
in "The Cell Song" competition to see which class knows the words the best

3. Participate in an activity to associate the functions of cell structures to jobs to help remember the parts
NJCCCS 5.1  , 5.5, 5.6

Cell Process-1

1.Participate in a lab to show how materials (salt sugar) diffuse in and out of a cell through a semi- permeable cell membrane and how water molecules move through osmosis from areas of high to low concentration

2.  Discuss how molecules move from areas of high concentrations to areas of low concentrations in and out of cells to achieve equilibrium

3. Discuss how larger molecules like starch need need energy to move through a cell membrane (active transport)

NJCCCS 5.1  , 5.5, 5.6

Strawberries/ Sugar Demo

14. Egg Osmosis

Cell Processes-2

 1.Observe the Diffusion/Osmosis demos hours later to see how the salt/ sugar diffused through the membrane, how water molecules moved through Osmosis, and how larger molecules like starch were unable to pass through the membrane without energy

2.Discuss the roles of carbohydrates, proteins, lipids, nucleic acid. water in cells and work in groups classify compounds as organic or inorganic

NJCCCS 5.1  & 5.5